Method and apparatus for the classification of solid particles

Procede et appareil de classification des particules solides

Abstract

A method for the classification of solid particles, in particular powdery catalytic components for the polymerisation of olefins, comprises sending solid particles suspended in a transporting gas flow (1) through a screening means (2). Immediately upstream to the screening means (2), there is an auxiliary fluidised bed classifier, in which the top of the bed (13) is at the level of the lower part of the grid (2).
Un procédé de classification des particules solides, en particulier des constituants catalytiques poudreux destinés à la polymérisation d'oléfines, consiste à faire passer des particules solides en suspension dans un écoulement gazeux de transport (1) à travers un dispositif de criblage (2). Immédiatement en amont du dispositif de criblage (2) se trouve un classificateur à lit fluidisé auxiliaire, la partie supérieure du lit (13) se trouvant au même niveau que la partie inférieure de la grille de criblage (2).

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (11)

    Publication numberPublication dateAssigneeTitle
    DE-1757516-A1February 17, 1972Vni I Pk I Avtom Predpriaty PrEinrichtung zum Sieben von pulverigem Gut
    DE-3223073-A1March 08, 1984M & S Industriebedarf GmbhPneumatic dust removal and conveying equipment
    DE-3442708-C1July 24, 1986Pks EngineeringMethod for operating an air classifier
    EP-0103702-A2March 28, 1984Fried. Krupp Gesellschaft mit beschränkter HaftungProcédé et dispositif pour tamiser des particules solides transportées pneumatiquement
    FR-2198794-A1April 05, 1974Fazer Ab Oy Karl
    GB-775196-AMay 22, 1957United Lamp Black Works LtdImprovements in or relating to methods of and apparatus for separating or classifying materials
    US-2769544-ANovember 06, 1956Fuller CoMaterial trap
    US-3774759-ANovember 27, 1973InteriorSeparation of particulate solids of varying densities in a fluidized bed
    US-4242197-ADecember 30, 1980Fritz-Aurel GoergenMethod of and apparatus for classifying refuse
    US-4411778-AOctober 25, 1983Venable D LApparatus for screening grain or the like
    WO-9219392-A1November 12, 1992Sweco, Inc.Separateur a tamis vibratoire circulaire

NO-Patent Citations (0)

    Title

Cited By (1)

    Publication numberPublication dateAssigneeTitle
    WO-2004028711-A1April 08, 2004Kikusui Seisakusho Ltd.粒体の粉取り兼垂直搬送兼集塵の方法および装置